share time: 2026-10-17 12:31:57
普通女孩沈砚靠父母开网吧起早贪黑攒的血汗钱苦读，终于冲进奥数决赛誓要拿奖改变家境。决赛当天她却遭遇变故：本该稳拿的优势题被判定错误，对手似有违规操作。绝望之际，她意外触发了随身携带的旧砚台里的神秘力量，不仅反算出正确答案，还揭开对手背后的阴谋，最终逆袭夺冠，照亮了全家的烟火日常。
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